Help Center/ Distributed Database Middleware/ User Guide/ Connection Management/ Enabling and Disabling SSL for an Instance
Updated on 2025-06-25 GMT+08:00
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Enabling and Disabling SSL for an Instance

Secure Socket Layer (SSL) is an encryption-based Internet security protocol for establishing secure links between a server and a client. It provides privacy, authentication, and integrity to Internet communications. SSL:

  • Authenticates users and servers, ensuring that data is sent to correct clients and servers.
  • Encrypts data, preventing it from being intercepted during transmission.
  • Ensures data integrity during transmission

SSL is disabled for new DDM instances by default. Enabling SSL will prolong network connection response and increase CPU usage. So, evaluate impacts on service performance before enabling SSL.

You can connect to a DDM instance from your client with two methods: using SSL connection or a non-SSL connection.

  • If SSL is enabled, you can connect to the instance using an SSL or non-SSL connection. SSL encrypts connections to the instance, making in-transit data more secure.
  • If SSL is disabled, connect to a DDM instance using a non-SSL connection.

    Enabling or disabling SSL for a DDM instance will restart the instance immediately. During the restart, the instance is unavailable. Restarting an instance will clear the cached memory in it. You are advised to restart it during off-peak hours.

Enabling SSL

  1. Log in to the DDM console.
  2. On the Instances page, locate the instance that you want to connect to and click its name.
  3. On the Basic Information page, at the Instance Information area, click in the SSL field.
  4. In the displayed dialog box, click Yes.
  5. On the Basic Information page, view the results.

Disabling SSL

  1. Log in to the DDM console.
  2. On the Instances page, locate the instance that you want to connect to and click its name.
  3. On the Basic Information page, at the Instance Information area, click in the SSL field.
  4. In the displayed dialog box, click Yes.
  5. On the Basic Information page, view the results.

Downloading the CA certificate

  1. Log in to the DDM console.
  2. On the Instances page, locate the instance whose CA certificate you want to download and click its name.
  3. On the Basic Information page, at the Instance Information area, click Download in the SSL field.
  4. Download the CA certificate.
Parent topic: Connection Management